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1. The varieties are selected for wintering and good burying spinach.
2 sowing appropriate sowing, if sown too early, the seed germination before winter, the seedlings, due to low temperature, seedling growth is very slow, overwintering due to seedlings shallow root susceptible to frost damage; sowing too late, the soil has begun to freeze, site preparation and The quality of sowing is poor, and the cover soil is not strict. The seeds and soil are not in close contact. The spring of the following year is uneven and there are many seedlings. It can be planted when the average daily temperature drops to 2 to 4°C.
3. Before harvesting the soil, spread the decomposed manure as base fertilizer, and plough and pry it to make the fertilizer and soil fully mixed. After leveling the ground, build a 1.4-meter-wide flat and prepare for sowing. The amount of 667 square meters of dried seeds immersed in spinach was 6-7 kg. Such as sowing germinated seeds, easy to freeze during the winter. The ditch is about 10 cm apart, and the ditch is about 3 to 4 cm deep. After the drill, cover soil. When sowing, if the soil is dry, the soil can be compacted after covering the soil to make the seed and the soil closely connected. If the soil is wet, it should be dried after the soil is covered and then compacted to avoid surface compaction. Then let it be winter, no special management is required, and the snowballs in winter can meet the demand of seed germination for water.
4. After the soil thawing in the field tube in early spring, the vegetable pot was lightly chopped for 1 time to increase the temperature and promote seedling growth. In early March, the seeds of the burying spinach began to germinate, and it was not possible to flood with large floods to prevent the ground temperature from decreasing and the soil compacted and hindered emergence. After the seedlings grow two true leaves, the growth rate is accelerated, the irrigation is topdressing, and the leaves are accelerated to grow. If no basal fertilizer was applied, 10 kg of urea was applied for the first time with irrigation water. After half a month, topdressing was performed again. If basal fertilizer was applied, the amount and frequency of topdressing could be appropriately reduced according to the growth of spinach. After the first irrigation, the soil should always be kept moist.
5. Harvest time According to the market's supply situation, the market is gradually harvested and harvested before the welsh onion planting in late May.
Second, onion cultivation
1. Variety selection Zhangqiu green onion, chapter miscellaneous series, the century onion king and other varieties.
2. Seedlings scallion seedlings grow long, when cultivated are used to transplant seedlings.
3. Colonization of welsh onion colonization time is generally in early June. The later the colonization, the shorter the formation period of the light blue rice, the lower the yield, and the late planting too late, the seedlings are easy to grow, and the hot weather after planting is not easy to slow seedlings. Before planting, 667 square meters of fermented pig manure 2.5 tons, diammonium 20 kilograms, deep turning the land to fully mix the soil fertilizer. According to the 60 to 70 cm line spacing ditching, ditch depth 30 cm, groove width 15 cm, the ditch into the decomposed dry manure and superphosphate, and then ditch the ditch planing planting. Take a large ridge width line to soften soil, 2 to 3 cm spacing, planting 2 to 30,000 per 667 square meters, with 250 ~ 300 kg of green onion. When planting seedlings grading, respectively, planting, seedlings slightly dilute, seedlings slightly dense. The green onion colonization depth is not suitable for burying green oysters. When planting, the onion leaves are planted perpendicular to the direction of travel.
4. Tian Guan 1 After top dressing and irrigation, the management center is to promote roots. It should not be watered when it is not dry and it should be drained after flood to prevent it from causing rot, yellow leaves and dead seedlings. Strengthen the cultivator in the farmland, promote the development of the root system, and make it quickly rejuvenate. Between Liqiu and Bailu, the principles of light pouring and early and late pouring should be mastered in irrigation. After the white dew, the weather was cool, and there was a large temperature difference between day and night. The welsh onions began to grow vigorously and enter into the light blue formation period. Need to top-dressing two times, with quick-acting nitrogen fertilizer as the main, each applying 15 to 20 kg of ammonium sulfate, the irrigation should grasp the principle of small water, ground pouring. Watering was stopped 7-8 days before harvest to improve the storage stability.
2 soil softening green onions and soil deeper, light blue and white, soil must be carried out in the light blue and white formation period, high temperature and high humidity season should not be soil, otherwise it is easy to cause root and pseudo stem rot.
5. Prevention and control of diseases and insect pests and onion diseases Prevention and control of onion disease: In the field of disease, no onions and garlic vegetables are planted within 2 to 3 years. After the harvest, the diseased bodies are removed and buried deeply or burned. Rig cultivation, timely cultivation of soil. Fertilizers made from fermented bacteria are used to reduce the nitrogen available to enhance plant disease resistance. In the early stage of onset, spray 20% of green suspension suspension 400 to 500 times, or 77% to kill 500 times of wettable microparticle powder, 60% of saponin aluminum phosphorus wettable powder 500 times, 72% of dew wettability Powder or 72% cream urea manganese zinc wettable powder, 72% cough cyanide wettable powder 800 times liquid, once every 10 days, continuous control 2 times. When the above-mentioned fungicides produce drug resistance, they can be replaced with 69% ank manganese zinc wettable powder or water dispersible granules 1000 times liquid.
Onion Pest Control: First, strict quarantine to prevent pests from spreading. Secondly, in areas where insect pests are endangered, welsh onions are interplanted with non-hazardous beans or other crops. The third is appropriate sparseness to increase field permeability. The fourth is to clean the fields in time and concentrate the diseased bodies of the crops that are being harmed, buried or burned. The fifth is the use of fly papers to trap and kill adult worms. From the beginning to the end of the adult period, 15 trapping and killing points are set for every 667 square meters, and a single insect trapping paper is placed at each point to trap and kill the adults and replace them once every 3 to 4 days. Sixth, science medicine. When there are 5 larvae on the victim's crop leaves, it is recommended to spray 1.8% of edestin emulsifiable concentrate 3000 to 4000 times or 48% of Loessben EC 800 to 1000 times, and 50% of larvae nectar 2000 times before the 2nd instar larvae. Liquid control.
Spinach green onion two crops high yield cultivation techniques
First, spinach cultivation